Air quality in Douai, Hauts-de-France, France today

Mr. Duck’s Air Quality Score

Good air today for Douai, Hauts-de-France, France

⚠️ This website is currently under active development. Some data may be incomplete or temporarily inaccurate. For health-critical decisions, please verify information through official government or environmental sources.

Categories follow US EPA AQI breakpoints for PM (estimate from latest valid measurements; this project does not compute EPA NowCast/24-hour AQI yet).

This friendly indicator summarizes the latest city readings. For health guidance, please see: EPA AirNow or WHO.

Air quality today

The air quality in Douai today is classified as Good. The primary pollutant measured is PM2.5 (fine particles). According to the latest data, the PM2.5 concentration is 3.7 µg/m³ and the PM10 level is 6.1 µg/m³, based on three valid measurements recorded by OpenAQ.

Overall conditions meet the Good category criteria for this location. This page is informational; for health guidance, use official sources such as EPA AirNow or WHO.

Latest sensor values

PM categories follow US EPA AQI breakpoints, shown here as an estimate derived from the latest valid measurements (this project does not compute EPA NowCast/24-hour AQI yet).

What the data includes

The Douai air‑quality dataset contains measurements for five pollutants – nitrogen monoxide (NO), nitrogen dioxide (NO₂), ozone (O₃), particulate matter 10 µm or less (PM₁₀) and particulate matter 2.5 µm or less (PM₂.₅). The data come from two monitoring stations that together provide nine recent rows of observations.

The most up‑to‑date values are from 2026‑02‑10 15:00 UTC for NO₂, PM₁₀ and PM₂.5, each recorded within the last three days. Ozone’s latest entry is older, dated 2025‑01‑13 10:00 UTC, while the single NO measurement dates back to 2024‑03‑11 02:00 UTC. Across the pollutants the observed concentrations span modest ranges: NO₂ varies from a low of 2.8 µg/m³ to a high of 6.6 µg/m³ with a median around 4.7 µg/m³; O₃ shows a broader spread from 1.0 µg/m³ up to 63.9 µg/m³, median 32.4 µg/m³; PM₁₀ stays between 6.1 and 7.35 µg/m³ (median 6.73 µg/m³); PM₂.5 ranges from 1.3 to 3.7 µg/m³ (median 2.5 µg/m³); NO is a single value of 0.8 µg/m³.

Because the dataset includes only two stations, spatial coverage across Douai is limited and some pollutants rely on older records. The freshness of most recent data is good for three of the five substances, but ozone and nitrogen monoxide are represented by dated entries, indicating that current conditions for those gases may not be fully captured. Users should keep in mind that air‑quality can differ between neighbourhoods and over time, and the available numbers reflect the specific moments when the sensors reported.

Learn more about sources and filtering: About the data.

Trusted references: WHO (Air pollution) · US EPA AirNow · European Environment Agency (Air)

Latest sensor values (bars)

PM categories follow US EPA AQI breakpoints, shown here as an estimate derived from the latest valid measurements (this project does not compute EPA NowCast/24-hour AQI yet).

Data notes

The data shown for Douai are based on three valid measurements and have been updated within 3 days, with the latest refresh recorded at 2026‑02‑10T15:00:00+00:00. This snapshot reflects conditions at the time of sampling; air quality can vary across different neighbourhoods and moments throughout the city, so values may differ from what you experience locally.

OpenAQ station rows